Intrinsically stretchable polymer based electrochromic devices for soft electronic displays
department or school: Applied Science, Faculty of
department or school: Electrical and Computer Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Preston, Garth Eden Claire
issued: 2020-08-27T21:12:44Z
issued: 2020
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: In soft electronics technology, stretchable displays move away from conventional rigid devices to adopt mechanical properties more similar to organic materials while preserving function, leading to more conformable and biointegrable devices. Progress has been made on luminescent stretchable displays; however, electrochromic materials that change colour instead of emitting light provide key advantages of low power operation, stability and high contrast. Despite this, development of stretchable electrochromic displays has been limited. In this thesis we demonstrate the first intrinsically stretchable fully integrated electrochromic display device. A poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) conducting polymer and (1-butyl-3-methylimidazolium octyl sulfate) ionic liquid conductive composite is used as the intrinsically stretchable electrochromic electrodes, with a stretchable polyvinyl alcohol and phosphoric acid-based electrolyte and transparent styrene-based elastomer substrate to form a single pixel device. Both a transparent and reflective opaque version of the device are made. High contrasts up to ΔTmax=15% for transparent and ΔRmax=20% for opaque cells are shown, and optical modulation degradation as low as ΔT or ΔR=1-3% is shown when the samples are strained from 0% to 30% length. Under 30% strain they show fast switch times <7 s, high contrast for up to 500 electrochemical cycles, and low power operation. They perform comparably to other PEDOT based flexible electrochromics with the added benefit of stretchability. A 3×3 passive matrix display is fabricated and high contrast low cross talk single pixel activation addressability is demonstrated under 0% and 30% strain, the first intrinsically stretchable multi-pixel electrochromic display. Fabrication is performed using solution-processing techniques with low cost materials, enabling easy potential scale up. An optical and electrochemical characterization setup is developed to measure p…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/75726
note: INTRINSICALLY STRETCHABLE POLYMER BASED ELECTROCHROMIC DEVICES FOR SOFT ELECTRONIC DISPLAYS by Garth Eden Claire Preston B.Sc., McMaster University, 2017 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Electrical and Computer Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) August 2020 © Garth Eden Claire Preston, 2020 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled: Intrinsically stretchable polymer based electrochromic devices for soft electronic displays submitted by Garth Eden Claire Preston in partial fulfillment of the requirements for the degree of Master of Applied Science in Electrical and Computer Engineering Examining Committee: John Madden, Electrical and Computer Engineering Supervisor Peyman Servati, Electrical and Computer Engineering Supervisory Committee Member Lorne Whitehead, Physics and Astronomy Supervisory Committee Member iii Abstract In soft electronics technology, stretchable displays move away from conventional rigid devices to adopt mechanical properties more similar to organic materials while preserving function, leading to more conformable and biointegrable devices. Progress has been made on luminescent stretchable displays; however, electrochromic materials that change colour instead of emitting light provide key advantages of low power operation, stability and high contrast. Despite this, development of stretchable electrochromic displays has been limited. In this thesis we demonstrate the first intrinsically stretchable fully integrated electrochromic display device. A poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) conducting polymer and (1-butyl-3-methylimidazolium octyl sulfate) ionic liquid conductive composite is used as the intrinsically stretchable electrochromic electrodes, wit…
has type: Thesis/Dissertation
date issued: 2020-11
is shown at: 10.14288/1.0394053
language: eng
degree discipline: Electrical and Computer Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/75726